Simulating The Bridge To Innovation
The Simple Definition
In simple terms ... a virtual experiment is a computer model that simulates the physics of the actual part
Engineering simulation is a mathematical modeling approach to calculate and predict the real world performance of products. We can use this technique to predict if our part will break, or how how much it will bend under load.
We can also use this technique to predict how much fluid will flow through a pipe or valve during any given time period.
If we would wish to know how much insulation we would need in our house during winter to save energy we could use simulation to model the physics.
With the use of virtual prototypes we can ask ... & answer the following questions
FEA is a numerical technique used to predict how a product will react to applied forces, vibration, & heat.
We can calculate if ... & when a part will break ... we can predict the performance of the design .. before we build it
FEA is used in the design and development of products. Using this technique we can predict and optimize the performance of our products. We can optimize for manufacturing and make sure the part is not over or under built and will not fail in the given application.
A Few benefits of using FEA in the design process ... We can predict the following
Is a mathematical technique to predict the flow of liquids and gases and how it affects product performance.
CFD is used to design and develop products that involve the flow and interaction of liquids and gases. The design of airplane wings utilize CFD to ensure the plane can get off the ground and is safe to fly.
Cars utilize CFD to streamline the shape and optimize for fuel economy.
Any product that involves the interaction of liquid and gases can benefit from the use of CFD.
Fluid Dynamics is all around us .. any time you ride in a car or fly on an airplane .. or use a computer .. fluid dynamics is involved.
This is an absurd question and would certainly bankrupt the company attempting to do this. However utilizing simulation we can build and virtually test 500 airplanes inside of a computer. We can optimize for performance, cost, quality and life of the product. We can assess the performance of the product as designed and make design trade offs and intelligent decisions without the need for guessing and building and testing physical prototypes. We can explore wild and crazy ideas inside of a computer very fast and cheap compared to physically testing it, the only risk being wasting a little bit of electricity. We can fail virtually hundreds of times a day, behind close doors , and no one will ever know publicly of these failures.
Engineering simulation is not a magical black box, garbage in does not equal gospel out. Blindly trusting the computer is a recipe for disaster and can be very costly. The modeling objectives should be identified and the math & physics equations should be identified and understood before the modeling is started. The computational model should be validated by a physical test simulation has been completed.
The Holy Trinity
All three of these attempt to answer the same question .. they just go about it in different ways.
If you've done your job right ... all 3 of these should agree with each other
The three answers should be close to each other
Here is a simple example
We wish to calculate how much water our design will hold
Two of out of 3 should be performed on every design
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In today's fast paced and chaotic environment, the margin for error is small, with tight schedules and even tighter budgets.
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Travis "Grizzly" Jacobs JA Simulations